Question -
Answer -
(i) Straight angle = 1800 or half of a revolution
Hence, (c) is correct answer
(ii) Right angle = 900 or one-fourth of a revolution
Hence, (d) is correct answer
(iii) Acute angle = less than 900 or less than one-fourth of a revolution
Hence, (a) is correct answer
(iv) Obtuse angle = more than 900 but less than 1800 or between 1 / 4 and 1 / 2 of a revolution
Hence, (e) is correct answer
(v) Reflex angle = more than 1800 but less than 3600 or more than half a revolution
Hence, (b) is correct answer